Perspective and plan views of a graphic representation of the periodic table of chemical elements as a helix and space lemniscate, with the helix drawn for the short periods and the space lemniscate drawn for the medium periods. This table was originated by English radiochemist Frederick Soddy (1877-1956) in 1914 and classified by chemist Edward G. Mazurs as Type IIA2-2 in his seminal work Types of Graphic Representation of the Periodic System of Chemical Elements (1957). A version of this table appears as Figure 48 on page 122 of Mazurs' 1957 publication.
1898 (Original design), Circa 1957 (Date attributed to slide)
Soddy, Frederick, and Edward G. Mazurs. “Periodic Table in Style of Helix and Space Lemniscate.” Glass (material), circa 1914–1957. Edward G. Mazurs Collection of Periodic Systems Images, Box 1. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/th83kz986.
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